Selective laser sintering powder recycle system
US7887316B2 · kind B2 · utility
45Cited by
16References
9Claims
0Family size
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Key dates
| Filing date | Feb 27, 2009 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Feb 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus for forming three-dimensional objects by laser sintering that includes the use of dense phase pneumatic conveying to internally recycle overflow powder, and to thoroughly blend overflow, recovered and virgin powder to provide a consistent powder feed mix to a laser sintering machine. Overflow powder from the laser sintering machine is recovered and recycled back into the laser sintering machine for reuse. The approach results in a compact and reliable powder recycle system with complete blending and minimum attrition to the handled powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.